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Air / Fuel Ratio meter

Pictures of the display and Lambda sensor!!

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Lambda Sensor Display Top of Page Shift Light - and over rev warning F1 style shift light - and over rev warning Have just ordered the parts from Maplins - will put up details, pictures and a video when I've got it all working!! Estimated costs are around the £15 mark Top of Page Megajolt Jr Megajolt Lite Jr (MJLJ) is an experimental ignition controller designed to control a Ford EDIS 4, 6 or 8 distributorless ignition module. It can run stand alone, or in conjunction with a fuel injection computer such as Megasquirt EFI. This will allow me to properly map the ignition advance - and ditch the distributer - gaining BHP as well as a proper rev limiter and shift light setup Their website is http://picasso.org/mjlj/ Mine has arrived :-) woo hooo Manged to get an Edis 4 unit, coil pack, NEW set of spark leads!, Throttle position sensor, VR sensor and 36-1 toothed wheel for crank position sensing - all for FREE!!!! OK so Car Components of Gosport probably own my soul for a while - and will no doubt call in IT favours for their oily favours Went to a local tuning place to have an insert lathe turned to fit inside the CVH toothed crank wheel which I managed to get off the old pulley seemingly without trashing it or loosing any teeth (or too much skin - which was nice) I managed to temporarily hook everything up - and ran my old spark plugs to see if it did what it said on the tin - and hey presto - all 4 firing away like sparky things :-) Only problem is - the software doesn't seem to report the RPM - so I suspect that it is currently running in static 10 degrees in limp home mode Further reading suggested to check the transistors on the Megajolt unit - as many have been put together with them incorrectly fitted - sure enough ALL the trannies are soldered in wrong...DOH! Hurriedly went about removing them all tonight (good excuse to get away from the football- hope my revving and cussing didn't disturb the footy fans...LOL)- and have put them in as to the schematic so fingers crossed for tomorrow evening if I get chance The bracket to hold the sensor was just bashed out of an old bracket I had lying around - and is a bit bodgy and flexes a little - and I just don't trust the jubilee clip holding the sensor soo close to the toothed wheel (buzz saw??) so will be properly made as soon as I have it all in place Pictures of the toothed crank wheel - and the lathed insert and the before and after shots :-) rob 16-6-06 Last nights schematic check turned up trumps - all the transistors were soldered in wrong - hence the laptop not getting RPM as the signal from the toothed wheel was not getting through to the Megajolt unit...DOH!!! Well tonight was a breakthrough and managed to get the car running using the Megajolt system with the loom hanging over the side of the car and all seems good (after managing to get the missing tooth on the toothed wheel 180 degrees out of line - causing the most almighty backfire I have ever heard causing neighbours to see who had been shot...LOL) Hopefully tomorrow I will be able to mount and bolt down the hardware and shorten the miles of loom and try and get it neat enough to try and take it for a spin out on the road The map I currently have in the unit is a 3D map of a slightly modified emerald map for a mild tuned pinto engine - but unless I can find a way of using the throttle sensor on my progressive 2 choke carb I'm going to be stuck with using it in 2D for now - but will be good for a shakedown test and to set the sequential shift lights and test the soft rev limiter out with for sure :-) Hopefully the bike carbs will be back from the manifold man soon and we can try out the new system in anger 18-6-06 UPDATE Managed to bodge a TPS sensor into the system As you can see its very bodgy - but seems to work OK - spent most of the weekend driving about trying different maps and tweaking to get it close to the old mech dissy as possible and think I have got it fairly close First impressions in the system is very good - the soft rev limiter works quite nicely - better than I had expected Not put any shift lights/over rev warning lights into the system yet - but seems very straight forward to do As I have used one of the switched output terminals for the TPS input I still have another 5 RPM or TPS based configurable switches so I think I'm going to have a sequential shift LED cluster (green orange red orange green) F1 style - and perhaps a rev limit light Megajolt stuff Clever software interpolates between cells Tickover on 3d map bodgy TPS hookup the dreaded crank sensor redundant dissy A Brain the size of a fag packet! Coil Pack Edis4 and miles of wire Bloody crank sensor... again Whos a pretty pulley? IMGA0656.JPG IMGA0655.JPG IMGA0654.JPG IMGA0653.JPG 19-6-06 UPDATE Well I took the car to work today and managed to get big missfires and pops before I even got out of the street The laptop was talking to the Megajolt without issues and all seemed OK from a quick glance Like a fool I decided to swap maps and give another a try - just in case I had somehow broken the last map - but to no avail The car finally coughed and spluttered its last spark a few hundred yards from home - so got the old rotor arm and cap back on and hurriedly did a change roadside back to the old system - which got me to work without any dramas For the journey back I hooked everything back up and double checked the crank sensor which had lost its metal clip holding the connector into the sensor causing it to pop out - so missfire and complete kill explained as running 10 degrees limp home mode till it gave up completely I remade the connection and it fired up without issue - so put the 2d map back on and thaught I'd concentrate on getting 2d as good as I could before trying to go full 3d :-) Didnt make it too far down the road before I got big missfires and popping again - was it the map or the bloody sensor -I gingerly tried upping the advance - to see if the 2d map was just a bit stingy but keeping an eye on RPM and trying to hold it at a steady RPM clearly showed that the sensor seemed to be doing its own thing - so time to get the cable ties out. Managed to clamp the sensor and cable securely to the bracket and gave it another go- wheelspinning and oodles of poke above 2/3000 so the sensor seems to have been causing untold strangeness - hopefuly we have it temporarily sorted for now - just got to get the curve to come in earlier I think Hoping the journey into work is not too adventurous tomorrow if the weather is good - will be keeping an eye on the running RPM graph on the laptop all the way till it proves to be 100% stable :-) Top of Page